Power supplies

Here’s a compilation of adapters/power supplies meant for use with guitar pedals. I have not listed pedal-specific power supplies (such as the one that comes with the Whammy, for instance), as they are meant for specific pedals only. I have also not taken my own preferences into account – this is more an effort to present all the options :)

Unit

Type

Isolated outputs

mA capacity

Notes

ADL / Pedalgear Juice Box 3

Toroidal transformer Yes, in groups Iso 1,2: four outputs each. 500mA total @ 9vDC for each group.
Iso 3: 1 output with 250mA, adjustable from 4.6 to 18vDC
Iso 4: 1 output with 250mA, adjustable from 6.5 to 24vDC
Iso 5: 1 output with 1500mA at 12vAC
New version of the ADL Juice Box. Input voltage is selectable 120/240 volts. Iso 1 and 2 has one output each with sag ”dying battery simulator” circuit.Courtesy mains outlet.

Alctron AC2DC

? ? ? Looks like a copy of the T-Rex Fuel Tank Classic. Common ground for the 9vDC outputs, 12vDC and 12vAC outputs might be isolated.

Amperor Voltz/MilliVoltz

Li-Ion battery pack, switching type charger Yes 6000mAh battery. Uses separate isolated converters for various voltages, at approx 500mA max each. Provides 100% ripple-free DC voltage, as the power source is a battery. Just keep the battery charged, and you’re set!

Artec SPB-8 Power Brick

Digital switching adapter No 8x9vDC, 100mA each; two are adjustable 0-12vDC. Top-loaded connections, so it will not allow pedals placed on top of it. 8 cables included, with right-angle plugs. Each output is individually regulated, but not isolated.

Artec SPB-12 Power Brick

Digital switching adapter No 10x9vDC, 100mA each2 x selectable 9/12vDC, 300mA each Top-loaded connections, so it will not allow pedals placed on top of it. Each output is individually regulated, but not isolated.

Ashton Powerbar

Ashton_POWERBAR

External switching type adapter No 7x9vDC, 500mA total
9vDC, 500mA*
12vDC, 500mA
18vDC, 500mA
* The specs state that one of the 9vDC outputs is 500mA separately, while all pics show 8 9vDC outputs, 500mA total. The latter matches the specs of the Joyo JP-02, which this unit looks very similar to.

BBE Supa-Charger

Toroidal transformer Yes Six outputs switchable 9/12vDC, 100mA and two switchable 9/16vDC, 200mA. No word yet on if the 16 volt setting is unregulated (like the PP2+ ”L6″ mode). Similar to the Pedal Power 2+, but without the ”sag” function. Input voltage is selectable 120/240 volts.

Belcat PST-10 Power Station

? No (most likely) 8x9vDC + two adjustable 6-12vDC Powered from a 15vDC adapter (1000mA). No info on output mA capability.

Biyang Pedal-Power

? ? 2x9vDC, 1000mA total
3x9vDC, 100mA (total?)
2xACA (12vDC?), 1000mA total
2x6vAC, 1000mA total (for Biyang tube pedals)
From/for the Biyang ”Tonefancier” series. The various groups of jacks could be isolated, as they have different mA ratings, but I don’t know.

Basslab Dual-9-250

? (although I’m guessing transformer) ? 2x9vDC, 250mA Danish unit with two (isolated?) groups, each with 250mA.

Boss PSA

Transformer n/a 200mA @ 9vDC The grand-daddy of transformer adapters.

Boss PSA-120S, 230S

Digital switching n/a 500mA @ 9vDC New version of the PSA. More current available from digital switching technology.

Boss PSC

Transformer n/a 1000mA @ 9vDC Originally designed to power the BCB-60 pedal board. It is regulated and has the correct plug polarity, so it should work if you need more power than the PSA can deliver.

Burkey Flatliner PRO

Toroidal transformer Yes 9 individually isolated outputs:
5x9vDC 200mA, 1x12vDC 200mA,
2 adjustable outputs, 1×9/12vAC 1000mA
A very competent power supply. Make sure you have room for it, though – it is quite big.

Burkey Flatliner SIX

Toroidal transformer Yes 6 individually isolated outputs, each with 100mA and selectable 9/12/15/18 volts DC.

Burkey PRO Rectifier

n/a n/a (although the output that powers it is isolated from the source) 12vDC, 700mA or 9vDC, 800mA Add-on unit for the Flatliner PRO, which uses its AC output to provide power to Eventide and TC Nova pedals.

Carl Martin Big John

Transformer No 7 outputs with a total of 600mA @ 9vDC Same unit as the Cioks Big John, but rebranded for Carl Martin. Output connectors are gold plated.

Carl Martin Powerjack

Digital switching n/a 1670mA @ 9vDC Switching type supply – works worldwide.

Carl Martin Pro Power

Transformer (toroidal?) Yes 8 isolated outputs, switchable between 9/12vDC.
Outputs 1-6: 150/110mA
Outputs 7-8: 350/220mA
Input voltage selector (110/230vAC).

Cioks AC Rider

Transformer Yes, in groups 2 groups of 2 9vDC jacks each, 75mA max per group
9 and 12vAC, 800mA (use either the 9 or 12vAC jack)
A simple solution if you need AC voltages, but don’t have too many other pedals

Cioks Baby 2

Transformer Yes, in groups All outputs 9vDC. 1-4 are shared, 200mA max. Output 5 (100mA) is isolated. 18vDC possible via special cable (either Booster Flex or Stack Flex).

Cioks Big John

Transformer No 7 shared outputs with a total of 600mA @ 9vDC 18vDC possible via Booster Flex cable.

Cioks Double Jack

Transformer No 5x9vDC, 2x12vDC – 600mA total 18vDC (24vDC from the 12 volt outputs) possible via Booster Flex cable.

Cioks Power Bitch

Transformer Yes, in sections 3x9vDC, 150mA total
1x18vDC, 80mA
1x24vDC, 60mA unregulated
1x40vDC, 60mA unregulated
Great unit if you have a few 9vDC pedals and one of the oddball powered Electro-Harmonix ones

Cioks Schizophrenic

Transformer Yes 5 outputs selectable 9/12vDC, 75mA each
1 output selectable 18vDC, 40mA or variable 4-14vDC, 60mA
Basic 9/12vDC unit with isolation and one special output

Cioks DC8

Toroidal transformer 8 outputs total, in 6 isolated sections. Outputs 1-2: 9vDC, 100mA each
Outputs 3-4: 9/12vDC, 100mA each
Outputs 5-6: 9 and 12vDC, 300mA total
Outputs 7-8: 9 and 12v DC, 300mA total
Smaller version of the DC10. Comes with mounting kit for Pedaltrain boards.

Cioks DC10

Toroidal transformer 10 outputs total, in 8 isolated sections. Outputs 1-4: 9vDC, 100mA
Outputs 5-6: 9/12vDC, 200mA
Outputs 7-8: 9 and 12vDC, 400mA total
Outputs 9-10: 9 and 12/15v DC, 400mA total
Capable of running both normal 9vDC pedals and power-hogs like Eventide, TC Nova series, Tonebones etc. Comes with mounting kit for Pedaltrain boards. Also available in pink, as the ”Pussy Power”.

Cioks AC8

Toroidal transformer 8 outputs total, in 5 isolated sections. Outputs 1-2: 9vDC, 100mA total
Outputs 3-4: 9vDC, 100mA total
Outputs 5-6: 9/12vDC, 100mA each
Outputs 7-8: 9 and 12vAC, 800mA total
Smaller version of the AC10, capable of running a group of normal 9vDC pedals with one AC pedal (Digitech Whammy etc). Comes with mounting kit for Pedaltrain boards.

Cioks AC10

Toroidal transformer 10 outputs total, in 6 isolated sections. Output 1-2: 9V DC, 100mA
Output 3-4: 9/12vDC, 200mA
Output 5-6: 9 and 12/15vDC, 600mA*
Output 7-8: 9 or 12vAC, 800mA*
Output 9-10: 9, 12 or 16vAC, 800mA
* one output/section can be used
Capable of running both normal 9vDC pedals and power-hogs like Eventide, TC Nova series, Tonebones etc, plus 9vAC pedals like the Digitech Whammy and some tube pedals.

Cioks TC10

Toroidal transformer 10 outputs total, in 8 isolated sections. Output 1-4: 9vDC, 100mA each
Output 5-6: 12vDC, 300mA each
Output 7-8: 9 and 12vDC, 300mA total
Output 9-10: 9 and 12vDC, 400mA total
Specially designed to run both normal 9vDC pedals and TC electronic pedals

Cioks Ciokolate

Toroidal transformer 16 outputs total, in 9 isolated sections. Output 1: 4-15vDC, 100mA
Output 2-4: 9vDC, 100mA
Output 5: 18 or 24vDC, 100mA
Output 6-7: 9 or 12vDC, 200mA
Output 8-9: 9 or 12vDC, 400mA
Output 10-11: 9 and 12 or 15vDC, 400mA
*Output 12-13: 9 and 12 or 15vDC, 600mA
*Output 14: 9 or 12vAC, 800mA
Output 15-16: 9, 12 or 16vAC, 800mA
*Use one of these sections

Cioks AC Rider Link

Toroidal transformer 6 outputs, in 3 isolated sections. Output 1-2: 9 or 12v DC, 200mA
Output 3-4: 9 or 12v DC, 200mA
Output 5-6: 9 or 12v AC, 800mA
Accessory mains outlet can be used to link together with other supplies in the ”Link” series, to fit your power supply needs.

Cioks ADAM Link

CIOKS-Adam-link

Transformer Yes Output 1-2: 9 or 12v DC, 100mA
Output 3-4: 9v DC, 250mA
Extra slim design to fit under nano-sized pedalboards.

Cioks Big John Link

Toroidal transformer 6 outputs, in 4 isolated sections. Output 1-2: 9 or 12V DC, 100mA
Output 3-4: 9 or 12V DC, 100mA
Output 5-6: 9/12V DC, 400mA each
Accessory mains outlet can be used to link together with other supplies in the ”Link” series, to fit your power supply needs.

Cioks Schizophrenic Link

Toroidal transformer 6 isolated outputs Output 1-2: 9/18vDC, 100mA each
Output 3-4: 9vDC, 200mA each
Output 5-6: 9/12vDC, 200mA each
Accessory mains outlet can be used to link together with other supplies in the ”Link” series, to fit your power supply needs.

Collins Power Station

Transformer (?) No 8 outputs @ 9vDC – 800mA total The Collins version is sold via www.musik-produktiv.de. The same unit is sold in other parts of Europe, under different names.

Dan Electrode (Danelectro) DA-4

? No ? Can be switched between fixed 9vDC output and adjustable 3-9vDC

Danelectro Zero Hum (DA-1)

Transformer n/a 200mA @ 9.6vDC Has been reported as having 300mA, but on the adapter itself it says 200, so…

Decibel 11 Hot Stone SM

Toroidal transformer Yes (6 sections) Outputs 1-2: 9 and 12vDC, 300mA
Outputs 3-4: 9 and 12vDC, 300mA
Outputs 5-8: 9vDC, 100mA each
The first two isolated groups (outputs 1-2 and 3-4) have a 9vDC and 12vDC output, which share 300mA max. The remaining four are separately isolated 100mA outputs for regular pedals.

Decibel 11 Hot Stone HC

Toroidal transformer Yes (4 sections) Outputs 1-2: 9 and 12vDC, 400mA
Outputs 3-4: 9 and 12vDC, 400mA
Outputs 5-6: 9 and 12vDC, 400mA
Outputs 7-8: 9 and 12vDC, 400mA
Meant for higher current draw pedals. Each isolated group has a 9vDC and a 12vDC output that share 400mA max.

Decibel 11 Hot Stone Deluxe

Toroidal transformer Yes (8 sections) Outputs 1-2: 9 and 12vDC, 400mA
Outputs 3-4: 9 and 12vDC, 400mA
Outputs 5-6: 9vDC, 100mA each
Outputs 7-8: 9 or 12vDC, 200mA each
Outputs 9-10: Variable 5-9vDC, 100mA each
A little of everything :)

Diago Powerstation

Digital switching n/a 3000mA @ 9vDC Looks very much like the laptop power supplies you can buy at electronics supply stores.

Digitech Hardwire V10 Power Block

Toroidal transformer Yes 4 x 9vDC, 140mA
2 x 9/12vDC 140mA (can be merged to 280mA)
2 x 9/12vDC 200mA (can be merged 400mA)
2 x 9vDC/5-12vDC 140mA

Dunlop/CAE Power System

Toroidal transformer Yes 8x9vDC, 80mA
4x18vDC, 125mA
2 variable 6-15vDC, 200mA
2 9vAC, 800mA
Designed by Bob Bradshaw. Rackmountable – it’s wide, but not as big as it would seem. Courtesy mains outlet.

Dunlop DC Brick (DCB10)

External switching type adapter No 7 outputs @ 9vDC, 375mA max
3 outputs @ 18v DC, 625 mA max
Discontinued – replaced by a new unit sold under the MXR brand (scroll down to find it)

Dunlop ECB04

Transformer n/a 18vDC, 150mA Also available in a digital switching 18vDC/1000mA version (ECB06)

EBS AD-9

Digital switching n/a 630mA @ 9.3vDC 2,4,5 & 6-way daisy chains (DC-x) also available.

Eventide PowerFactor

Toroidal transformer Yes 4x9vDC/100mA
3 high-current 9/12vDC outputs
Designed and built by Cioks.

Eventide PowerFactor 2

Powerfactor2

Toroidal transformer Yes Outputs 1-2: 9/12vDC, 100mA
Outputs 3-4: 9/12vDC, 200mA
Outputs 5-6: 9/12vDC, 400mA
Outputs 7-8: 12vDC, 400mA
Accessory mains AC output (fits Cioks Link series). Designed and built by Cioks.

Fame DCT-200

Transformer Yes Outputs 1-4: 9vDC/100mA or 12vDC/60mA
Outputs 5-6: 9vDC/250mA or unregulated (14,5vDC at 50mA loac, 12vDC at 200mA load)
Outputs 7-8: 9vDC/100mA or variable
12vAC and 12vDC, 250mA each
Cheap supply available in Europe from www.musicstore.com

Gator Cases G-BUS-8

Digital switching (separate power supply for the G-BUS) No 1700mA total – 8x250mA @ 9vDC, 3x350mA @ 18vDC Runs off a separate power supply.

G-Lab PB-1

pb1_d

Digital switching Yes 8x9vDC, 350mA max each1000mA max from each group (1-4 and 5-8) 100-230vAC input. Outputs 4 and 8 can be switched to reverse polarity. 12 and 15vDC requires special converter cable (available from G-Lab).

Godlyke Power-All

Digital switching n/a 2000mA @ 9vDC Comes with daisy chain (5 non-isolated outputs) and 4 cable adapters

Harley Benton Power Plant

Transformer No (the two 12 volt outputs may be isolated, but not the 9 volt ones) 8x9vDC, 500mA total
12vDC + 12vAC, 250mA each
Looks like a copy of the T-Rex Fuel Tank Classic, but with less current from the two 12 volt outputs (which may or may not be isolated, like on the T-Rex). Sold by Thomann in Germany.

Harley Benton Power Plant JR

Transformer Yes, assuming it’s a close enough copy of the original unit 5x9vDC, 120mA each Quite obvious copy of the T-Rex Fuel Tank JR. Sold by Thomann in Germany.

Joyo Power Supply JP-01

External switching type adapter No 8x9vDC, 2x18vDC

Joyo Power Supply JP-02

External switching type adapter No 8x9vDC, 1x12vDC, 1x18vDC Claimed by Joyo to have isolated outputs, but not so. The outputs have been measured and confirmed to share a common ground. Also sold under other brand names, such as the Caline CP-05.

Masotti Feed Box

Separate power supply (not suppiled) No 4 outputs @ 9vDC, 600mA total
1 variable 7-12vDC, 100mA max
Use any power supply with 13-20 volts DC or AC, 800mA or bigger (13.5vAC/1000mA nominal). Unit is MXR-sized.

Masotti PW-4

Transformer Yes, in groups 4 isolated groups with 2 outputs each. Groups 1-3 are 9vDC/100mA, while group 4 is 9vDC/250mA. Can be ordered with custom voltage (5/9/12/15/18vDC) in one group, and/or one group with variable voltage.

Maxon AC2009

Digital switching n/a 2000mA @ 9vDC Digital switching type, also sold as a kit with a distribution box.

Modtone Power Plant

Toroidal transformer Yes 5 selectable 9/12vDC, 150mA
2 variable 4-9vDC, 150mA
1 9vAC, 1000mACourtesy mains outlet.
No 250mA outputs, but a 9vAC output is more than welcome. Also, the input voltage is selectable 115/230vAC. Sadly, my own unit hums when the 9vAC output is used :(

Moen MISO-8

Moen_MISO8

Transformer Yes (?) Output 1: variable 9-18vDC, 50mA
Output 2: variable 5-9vDC, 100mA
Outputs 3-6: 9/12vDC, 100mA
Outputs 7-8: 9vDC, 350mA
Courtesy mains outlet

Mooer Micro Power

Mooermicropower

External 12vDC adapter No 8x9vDC, 300mA each It says ”isolated outputs” on the box, but I doubt it.

Moollon MPS-12 Power Supply

Toroidal (?) transformer Yes Outputs 1-9:
9vDC, 100mA / 12.3vDC, 70mAOutputs 10-12:
9vDC, 250mA / 12.3vDC, 200mA
Shown at NAMM 2011, and then nothing happened. It isn’t listed on the Moollon website, but seems to be available from a few dealers.

MXR DC Brick (M237)

External switching type adapter No 8 x 9vDC, 1200mA total2 x 18vDC, 800mA total New version of the DC Brick. Uses regular center negative 2.1mm barrel type jacks for all outputs.

N-Audio Powerbox MK2

Transformer 10 outputs, in 5 isolated sections. Section 1 and 2 (outputs 1-2, 3-4): 9/12vDC, 500mA per section
Section 3 (outputs 5-6): 9/12/15/18vDC, 250mA
Section 4 and 5 (outputs 7-8, 9-10): 9vDC, 50mA per section
Each section has two outputs that share current capacity and voltage setting. So you could call it a 5 output supply with twin jacks for each output.

One Control Micro Distro

Digital switching No 8 linked 9vDC outputs (1950mA total with supplied adapter)
One 12-18vDC adjustable output (50mA max)
Basically a daisy chain in a box. Adjustable output limited to 50mA.

Palmer PWT05

? ? 5 9vDC outputs. Capacity currently unknown. Pic borrowed from effectsdatabase.com

Palmer PWT-12

Toroidal transformer Yes, in pairs Outputs 1-8, 11-12: 9vDC, 250mA per pair
Outputs 9-10: 18vDC, 125mA per pair
Outputs 7-8 switchable to reverse polarity. Output 9 switchable to 12vDC. Outputs 11-12 switchable to 12vAC.Mains voltage selector (115/230v)

Pedal Pad Power Pad

Digital switching No 8 outputs @ 9vDC, 1670mA total.Courtesy mains outlet. Digital switching power supply with daisy chain-style outputs (common ground).

Pedaltrain Powertrain 1250

pt-powertrain1250

Transformer Yes, in groups Output 1: 9/12/15/18vDC, 150mA
Outputs 2-4: 9vDC, 210mA each with adjustable sag feature
Outputs 5-8: 9vDC, 500mA combined
Mains voltage selector

Pedaltrain Volto

pt-volto4

Battery pack No 9vDC, 2000mA max (battery capacity is 5000mAh) Designed to fit underneath Pedaltrain pedalboards. Comes with charger and daisy chain cables.

Power Bank

Transformer No 5 outputs @ 9vDC, 450mA total Most likely the same unit as the Signal Flex PS-9 (se below). This one is sold in the UK by Maplin.

Rifftone RT-10 Performer

Rifftone_rt10

Transformer Yes Outputs 1-4: 9vDC, 100mA or 12vDC, 60mA
Outputs 5-6: 9vDC, 250mA or 12vDC, 200mA max (unregulated?)
Outputs 7-8: 9vDC; 100mA or variable 4-9vDC, 100mA
12vDC and 12vAC outputs, 250mA max each
Mains voltage selector. The unit is quite tall/large, so make sure it will fit your board!

Riot Black Box DCT100

Transformer No (the two 12 volt outputs may be isolated, but not the 9 volt ones) 8x9vDC, 500mA total
12vDC + 12vAC, 250mA each
Same unit as the Harley Benton Power Plant. A copy of the T-Rex Fuel Tank Classic, but with less current from the two 12 volt outputs (which may or may not be isolated, like on the T-Rex).

Riot DC Power

Digital switching n/a 9vDC, 800mA

Rocktron DC OnTap

Digital switching n/a 1670mA @ 9vDC Comes with daisy chain and cable adapters. Specs are very similar to the 1spot and Godlyke Power-All.

Rocktron PowerTap

Rocktron-power-tap

Transformer Yes Outputs 1-5: 9/12vDC, 150mA
Outputs 6-7: adjustable 4-9vDC, 400mA
Output 8: 9vAC, 1300mA
Three accessory mains AC outputs.

Rothwell Stompjuice

Transformer No 6 outputs with a total of 600mA @ 9vDC Switchable 110/220v

Sanyo Pedal Juice

Rechargeable battery pack No Approx 2Ah. Battery time varies with the load (1 hour at 2000mA, 7 hours at 300mA, 50 hours at 10mA). Do take those time estimates with a grain of salt, though – as with any battery, the voltage usually drops below the useable range well before the supply runs out. About the same size as a pedal. Also available in black, if you so desire :)

Signal Flex PS-9

Transformer No 5 outputs @ 9vDC, 450mA total. The same unit seems to appear under several different names (”Power Bank” and ”Sound Lab”, among others).

SKB PDU12

Transformer All outputs individually isolated 2x9vAC/1300mA
2 variable 4-12vDC
4x9vDC
2x18vDC
2 selectable 9/12vDC
All DC outputs 100mA
1HE rack unit, same as the power section on the PS-55 pedalboard. Accepts multiple input voltages. All outputs selectable polarity. Unit also contains a cable tester.

Sound Lab Pedal Power 450

Transformer No (?) 6 outputs @ 9vDC, 75mA each and 450mA total Sold by Maplin UK – possibly replacing the ”Power Bank” mentioned above

The GigRig Generator

Digital switching n/a 9vDC/5000mA 2 Boss-style daisy chains provided with the unit.

T-Rex Fuel Tank Chameleon

Transformer Yes All outputs are 300mA (output 4 is 150mA when switched to 18vDC).
1-3: 9/12vDC
4: 9/18vDC
5: 9/12vDC
6: 12vAC.
Outputs 5 and 6 should not be used simultaneously. Mains voltage is switchable 115/230vAC.

T-Rex Fuel Tank Classic

Transformer In groups 9 outputs @ 9vDC, 500mA total (not isolated), isolated 12vDC and 12vAC outputs w/ 500mA each All 9vDC outputs are wired in parallel. Mains voltage selectable 115/230vAC.

T-Rex Fuel Tank Goliath

Transformer Yes 5 outputs @ 9/12vDC, 450mA
18vDC, 250mA
12vAC, 450mA
Mains voltage is switchable 115/230vAC.

T-Rex Fuel Tank Juicy Lucy

Transformer Yes 5 outputs w/ 12vDC, 300mA each. Supplied ”current doubler” cable combines two outptuts for 600mA. Designed to run the more power-hungry T-Rex pedals (Replica, Roommate etc), but will work with anything that can handle 12 volts DC.

T-Rex Fuel Tank JR

Transformer Yes 5 outputs with 9vDC, 120mA each. Supplied ”voltage doubler” cable combines two outputs for 18vDC, 120mA. Smaller and less powerful than the regular Fuel Tank, but with isolated outputs. Mains voltage selectable 115/230vAC (old version with attached mains cable was non-selectable).

Vinteck L’overpowersupply

External transformer No (?) 10 individually regulated outputs, selectable 9/12vDC, 2 12vAC. 3000mA max total. No mention of isolation (which, since the transformer is in a separate box, would be hard to do). Also available with a buffer/line driver section.

Visual Sound 1-spot

Digital switching No 1700mA @ 9vDC Lots of accessories (daisy chains, various converter cables etc) available.

Vitoos VP1 (DC-10X)

Digital switching No 8x9vDC, 150mA each
2x18vDC, 1000mA total
Powered from a separate 18vDC/2000mA switching type adapter. Essentially a daisy chain in a box.

Vitoos VP2

Transformer No 8x9vDC, 75mA each Powered from a separate 9vDC/600mA linear (transformer-based) adapter. Claimed to have isolated outputs, but is in fact another daisy chain in a box.

Vitoos Power Pack VP3

Digital switching No 6x9vDC, 2xselectable 9/12/18vDC. 2000mA total. Powered from a separate 12vDC/2000mA switching type adapter. Yes, another daisy chain in a box – despite claims of it having isolated outputs.

Voodoo Lab Pedal Power 2 Plus

Toroidal transformer Yes 8 isolated outputs.
1-4: 9vDC/100mA (switchable to 12vDC/60mA).
5-6: 9vDC/250mA (switchable to unregulated for Line 6 modelers).
7-8: 9vDC/100mA (switchable to adjustable 4-9vDC).
Two outputs can be combined in series to double the voltage, or in parallel to double the mA. Courtesy mains outlet.

Voodoo Lab Pedal Power AC

Toroidal transformer Yes 4 isolated outputs. 2 x 9vAC, 600mA; 2 pairs of outputs with 9 and 12vAC, 1200 mA respectively (choose either the 9 or 12 volt output from each pair). Same size as the PP2+. Courtesy mains outlet.

Voodoo Lab Pedal Power Digital

Toroidal transformer (?) Yes, in groups Group 1 and 2: 9 and 12vDC, 400mA (choose either the 9 or 12 volt output from each pair)
Group 3 and 4: 9vDC, 400mA
Designed to run higher-current pedals like Eventides etc. Pic borrowed from effectsdatabase.com

Voodoo Lab Pedal Power ISO5

Toroidal transformer Yes 3 x 9vDC/100mA (isolated)
9 and 12vDC, 300mA (isolated from the others, but not from each other)
1 x 18vDC, 100mA (isolated)
Smaller version of the Pedal Power 2+. Five isolated outputs/groups. The 9 and 12v/300mA outputs share the same source, so if you use both, the total draw can’t be more than 300mA.

Voodoo Lab Pedal Power 4×4

Toroidal transformer Yes 2 x 9/12vDC, 400mA
2 x 9vDC, 400mA
4 x 9vDC, 100mA

Voodoo Lab Pedal Power Mondo

Toroidal transformer Yes 2 x 9/12vDC, 400mA (two isolated groups – the 9 and 12v jacks are not isolated from each other)
2 x 9vDC, 400mA
4 x 9vDC, 100mA (switchable to 12vDC/60mA)
2 x 9vDC, 250mA (switchable to unregulated for Line 6 modelers)
2 x 9vDC, 100mA (switchable to adjustable 4-9vDC)
 Basically a Pedal Power Digital and Pedal Power 2+ combined into the same box.

Walrus Audio Aetos

walrus_aetos

Toroidal transformer Yes 6 x 9vDC, 100mA
2 x 9vDC, 250mA
Courtesy mains outlet. !20vAC version only.

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Note: most pictures are from manufacturer’s websites, or as supplied by manufacturers to retailers. If you (as the manufacturer or retailer) feel a picture is misrepresenting your product and you want me to take it down, or if you have a better one you’d rater I use, e-mail me at andreas (at) stinkfoot.se and I’ll be happy to oblige.

The golden rules of using power supplies:

Get a proper adapter. If it isn’t specifially made for audio applications (i.e. if it’s a generic ”will replace all adapters” type), it’s not made for audio applications, and shouldn’t be used. Yes, the same rules still apply – get the plug polarity, voltage and current (mA) capacity right, and it will work – but it probably isn’t well enough filtered. Your rig will show its dislike by humming loudly…

Get to know your pedals – before you plug in any adapter. Find out what kind of power they want (AC or DC), how much of that power they want (current draw in mA), and how it wants it delivered (plug/jack polarity). If the pedal says ”9vAC” or ”9v ~”, you can’t use the same adapter as to your Boss pedals. AC means ”alternating current”, which alters direction 50-60 times per second. DC means ”direct current”, which flows evenly from positive to negative. Also, if you plan on buying a switching type adapter, make sure it will not clash with your delay/reverb etc pedals (digital pedals and clock-based analog ones) – if you hear a faint whining sound, the switching adapter will not work for you, and the only recourse is to get a transformer based adapter.

Forget the terms ”negative tip” and ”positive tip” – those terms apply to the 1/8″ mini tele plug that to my knowledge now only is used on the ProCo RAT, the Ibanez reissue TS-808 and the old-style DOD pedals (all of which want a positive tip, btw). You might also find one or two Electro-Harmonix pedal in this group (beware, though – not all of the E-H pedals use 9 volts DC). All other ”normal” pedals use a 2.1mm barrel type plug, with the positive carried on the outside of the plug. The center pin in the adapter jack is therefore negative, and the term is ”center negative”. But plug polarity is one thing – ground polarity is another thing you need to know about. Again, most pedals (all ”normal” effects such as Boss, Ibanez etc) are the same – they have negative ground (battery ”-” goes to ground). But some effects – mainly ”boutique-type” germanium fuzz pedals – have positive ground instead. On those pedals, the adapter jack polarity is normally also reversed, but they don’t have to be – it doesn’t have anything to do with the fact that they are positive ground. The main thing to remember is that you can’t feed these pedals power from the same source (daisy chain or non-isolated psu) as you use for the others – that will short the entire power supply out, and make your pedals go quiet (at best – at worst, your gear will be damaged). For those pedals, you have to either use batteries, get a separate adapter (check the plug polarity), or get a psu with isolated outputs. Check the list above – there are only a handful of power supplies with isolated outputs.

You can never have too much power. You can kill your pedals with too much voltage, but not by the adapter having too much current. The pedals will only draw as much current as they need, regardless of the amount available from the adapter. But the bigger the adapter, the less strain you’re putting on it. A rig that draws 185 mA in total really needs a bigger adapter than 200mA – you don’t keep your car in first gear, at 5000 rpm, just because the redline is at 6000, do you? So, basically, unless there are other limitations – such as finances, for instance, or that you’re using the ”power thru” jack on a Boss TU-2/LS-2/NS-2/PSM-5 (which aren’t guaranteed for more than 200mA) – get quite a bit more than you technically need.